A+B+C=3,ABC均为正数,求证;1/(5A^2-4A+11)+1/(5B^2-4B+11)+1/(5C^2-4C+11)小于等于1/4

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A+B+C=3,ABC均为正数,求证;1/(5A^2-4A+11)+1/(5B^2-4B+11)+1/(5C^2-4C+11)小于等于1/4
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A+B+C=3,ABC均为正数,求证;1/(5A^2-4A+11)+1/(5B^2-4B+11)+1/(5C^2-4C+11)小于等于1/4
A+B+C=3,ABC均为正数,求证;1/(5A^2-4A+11)+1/(5B^2-4B+11)+1/(5C^2-4C+11)小于等于1/4

A+B+C=3,ABC均为正数,求证;1/(5A^2-4A+11)+1/(5B^2-4B+11)+1/(5C^2-4C+11)小于等于1/4

看着拙计82013年7月28日16时52分22秒